// $Id: heap.h 2 2011-10-17 17:49:43Z cedric.shih@gmail.com $
/*
 * Copyright 2011 Cedric Shih (cedric dot shih at gmail dot com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef BUFFERS_H_
#define BUFFERS_H_

#include <pthread.h>
#include <sys/types.h>
#include <sys/queue.h>

#include "zcbuffer.h"

#include "buf.h"

struct zcbuffer;

struct zcheap {
	pthread_mutex_t *lock;
	unsigned char *buffer;
	size_t offset;
	unsigned char *boundary;
	unsigned char *start;
	unsigned char *next;
	struct zcbuffer_list buffers;
	struct zcbuffer_list caches;
	struct zcheap_stat stat;
};

int zcheap_alloc_do(struct zcheap *heap, size_t len,
		struct zcbuffer **ptr);

int zcheap_recycle(struct zcheap *heap,
		struct zcbuffer *buffer);

int zcheap_spare(struct zcheap *heap);

size_t zcheap_available(struct zcheap *heap);

#endif /* BUFFERS_H_ */
